While this completed tunnel is the downline section of the corridor, DMRC said the up-tunnel is in progress.

Delhi Metro Tunnel Feet: The tunnelling was carried out between Pulbangash and Sadar Bazar stations using a Tunnel Boring Machine (TBM), working...

Delhi Metro Tunnel Feet: The tunnelling was carried out between Pulbangash and Sadar Bazar stations using a Tunnel Boring Machine (TBM), working...

The tender document said that the work will be completed within 42 months after the tender is awarded.

The tender document said that the work will be completed within 42 months after the tender is awarded.

Workers celebrate TBM Dorothy's breakthrough at Westmead. Image: Sydney Metro. Tunnelling is now complete for the western end of the Sydney Metro West...

Workers celebrate TBM Dorothy's breakthrough at Westmead. Image: Sydney Metro. Tunnelling is now complete for the western end of the Sydney Metro West...

The completed road surface inside the West Gate Tunnel. Image: Victoria’s Big Build.  Works on the Vic Big Build will continue over the summer,...

The completed road surface inside the West Gate Tunnel. Image: Victoria’s Big Build.  Works on the Vic Big Build will continue over the summer,...

The deepest underground tunnel in Malaysia is the SMART Tunnel, which is located about 20 meters below sea level. It is the first tunnel in the world...